Universal Gravitational Constant

The universal gravitational constant, abbreviated as G, (also called gravitational constant, Newton constant of gravitational, and Cavendish gravitational constant), is the proportionality constant used in Newton's Law of Universal Gravitation.  This constant is very difficult to measure with any high accuracy.

 

universal gravitational constant
\(\large{ G = 6.67408 \;10^{-11} \; \frac{N-m^2}{kg^2} }\)
Symbol	English	Metric
\(\large{ G }\) = universal gravitational constant	\(\large{\frac{lbf-ft^2}{lbm^2}}\)	\(\large{\frac{N - m^2}{kg^2}}\)

 

standard gravity
\(\large{ g = 32.17404856 \; \frac{ft}{sec^2}  }\) \(\large{ g = 9.80665 \; \frac{m}{s^2}  }\)
Symbol	English	Metric
\(\large{ g }\) = standard gravity	\(\large{\frac{ft}{sec^2}}\)	\(\large{\frac{m}{s^2}}\)